Amethyst Antique Bronze Picasso 4mm Czech glass fire polished jewelry beads are an overall brown bronze color but when in the light, the purple amethyst base is really apparent. While you can see the amethyst some in natural light, the overall appearance is a dark bronze. These are a picasso finish with makes the finish a little more natural or mottled than the luster finish on the 3mm beads the same color, yet they still shine beautifully.